第十七章（100）

Chapter 17: The Heir of Slytherin

Harry battles the basilisk and, with the help of Fawkes and the Sorting Hat, defeats it using Godric Gryffindor's sword. He destroys Tom Riddle's diary, which vanquishes Riddle and saves Ginny. The ordeal reveals that Lucius Malfoy planted the diary on Ginny to discredit Dumbledore and disrupt Hogwarts. With the immediate threat resolved, Dumbledore and Hagrid return to the school. The students and staff celebrate the end of the terror that plagued Hogwarts. The chapter brings resolution to the mystery of the Chamber of Secrets and highlights themes of bravery and friendship.